.- Realtor's Oversight: Your realtor may have failed to verify the status of the POS report early in the process, leading to last-minute revelations.Steps to TakeTo address the current situation and prevent similar issues in the future, consider the following steps:1.

SB13 and its grace period on unpermitted units should preventing this from occurring.  

Thankfully I'm in Ohio which has actually added a chapter and language to the revised code in an attempt to prevent cities from implementing policies that institute rent control or rent stabilization in any form.

Or is it simply cosmetic or preventative or an upgrade?

Often times inspectors overlooked them as they are very small and minor but as you can probably already tell, they are extremely important and prevent water intrusion.Your best bet would be to contact a very reputable Siding/roofing contractor and have them go through the entire property and put in the proper drippage flashings seals and caulking necessary and have them insure the work. 

Will this prevent me from saving for the down payment for the future house?

This prevents Amy confusion about different leases, agreements, etc.

As others have stated, a well-drafted LLC operating agreement should have language that would prevent management from withholding material facts and/or removal provisions for a manager who doesn't comply.

Insurance is to prevent loss, not provide profit.  

Repairs needed, conditon of the property, preventative maintenance needed throughout the year and who will handle4.